> get LLMs to perform up to Apple's typical standards of polish and control.

I reject this spin (which is the Apple PR explanation for their failure). LLMs already do far better than Apple’s 2025 standards of polish. Contrast things built outside Apple. The only thing holding Siri back is Apple’s refusal to build a simple implementation where they expose the APIs to “do phone things” or “do home things” as a tool call to a plain old LLM (or heck, build MCP so LLM can control your device). It would be straightforward for Apple to negotiate with a real AI company to guarantee no training on the data, etc. the same way that business accounts on OpenAI etc. offer. It might cost Apple a bunch of money, but fortunately they have like 1000 bunches of money.